Water system for dishwashing machines



g- 1952 J. L. JONES 2,607,628

WATER SYSTEM FOR DISHWASHING MACHINES Filed May 11, 1945. 4 Sheets-Sheet l Jffe aso aa lxbnes,

' wraaqys Aug. 19, 1952 Filed May 11, 1945 J. L. JONES WATER SYSTEM FOR DISHWASHING MACHINES 4 Sheets- Sheet 2 1220822508 Jgjffwsonlxiozaes,

vii/208 5742 13 Aug. 19, 1952 J. L. JONES 2, 7,

WATER SYSTEM FOR DISHWASHING MACHINES Filed May 11, 1945 4 Sheets-Sheet 5 s; a $5 40 g: s

f l 30 ea g 6 Aug. 19, 1952 J, JONES WATER SYSTEM FOR DISHWASHING MACHINES 4 Sheets-Sheet 4 Filed May 11, 1945 Patented Aug. 19, 1952 K 2,607,628 WATER SYSTEM FOR'DYISHWASHING f ...IMA p g 'Jeff erson 'L. Jones, Cambridgq'Mass. v I, "ApplicaticnMay 11, 1945, SerialNo. 593,232

' My present invention relates-'todi'shwashing or like machines and particularly to the -del ivery systems for the wash water ofsuchmachines.

As, in dishwashing, machines, thewash water: is re-circulatedjit'is necessary to cl eanse'the 'wash water delivery system at 'regu1ar"intervals., In spite of careful screening, such systems generally and the 'manifolds andspray devices in particular, become fouled with food particles and foreign matter. a result both to ensure'the 1 2 Claims. (01. see-141i 1o efllcient operation of the machines and for sanitary purposes, theicleansing 01f thewas h water delivery system is an essential service. Because of the construction of machines prior to-my invention, such service was difficult as it required exterior disassembly of the machines.

In accordance with my invention, I DI'OVidG a washing machine having "awashing chamber in which there is mounte'da dish support ii spaced relation to the sides or the chamber. A wash Water tank receives draina'ge from the washing chamber and pump controlled means incommunication with the tank, deliver wash water to the t b v. V i

' P mp qen lled me n a ri er element supporting "a manifold element in the washingchaniber below thedish supportand the elements/are assembleidftogether'by a quick'releasable connection; Connected to the manifold element, as by bayonet. .joints are a plurality of spray devices'di'sposed between the dish support and an adjacent side of the chamber; and these devices have a plurality of orifices disposed" to deliver sprayagainst' dishes on the support.

The nature of the connection between'the riser and'm'anifold elements depends to a considerable extent; on ,the' type of? dishwashing}.machine. ,Wherejthedish support is a removable basket, the connection may be a joint; of the bayonet type. Where the dish support isan endless iconveyor, the connection is a slidingjoint permitting the top of the manifoldsto be movediendwise fromthe machine tqavoidthe necessity of disconnecting the conveyor. v i

. In accordance with, my invention, :the wash waterdelivery system.v of .dishwashing. machines may be .easily and .effectively:iservicdtas the manifold elements and. the spray-device's "may be readily removed from the machines *as a' :unit

and quickly disassembled for-"thorough cleansing.

In the accompanying drawings, I have shown illustrative. embodiments of my invention from which its novel features and advantages wi l be readily apparent.

ithe' cha'm ber l2 into'the tank. The tank I l'ha's'an overflow pipszs adapted to V Inthedrawings: Fig. 1 shows in cross section a dishwashing machine in'acc'ordance with my invention.

Fig. 2 is a section along the'lines 2- 2, of

' Fig. 1.

Fig. 3 shows, inside view; a manifold and spray device assembly. I

' Figs: 4, 5, "and-6 are section's alongthe-line's 44, -5 5, and" 6'6, respectively, of Fig. 2. I 'Fig. '7 is a sectionalon'g the lines 1"!, of 1g; 3, Fig. 8 is a fragmentary side view'of a m 'dific'a tion o myinventionyand Fig. 9 is a fragmentary section along thelines At [0, in Fig. 1, I have'indicated' generallye dishwashing machine having in its base a wash water tank [H disposed to receive drainage from the washing chamber, generally indicated at l2. The machine in has a cover- I3, hinged as at M to permit the basket l5 for dishes, glasses'and silverware to'beplaced in or removed washing chamber l2; f r v 'The basket 1s supported in spaced relation to the side walls It andl'l or the chamber-I0 by removable guide rails I8 seated on brackets! and mounted on theside walls l6 and, respectively; At'2 l',-I'have indicated a ledge removably supr miih "porting a scrap tray or tfays*22 which 's'erve'to screens substantial part'bfthe food particles and foreign matterfromihewater dr'ainih' be connected to any suitable drain (not shown) 'and at 24 I"have shown afscreen ior'the intake 25" of the pump26 which'may'be'pl'aced where 'sli'own or'located atone end otthetank ll. outlet adjacent one of its ends;

L -shaped slots' 35 the port 33 anew interlock therein on partial'rotationoi themanifold Zita-e1 e r t h r s tfia I By' this constrli n manifold 29 below" the basket 'I 5 with its arms" -30 and 3| parallel to the sides of the chamber [2 of the chambeir' fl 36, extending upwardly between the basket I5 and the chamber side wall l6. 'The;spray:-devices-,

35 have orifices 31 disposed to direct jets of spray" against objects in the basket l5. 1

As may be most clearly seen in-Fi'gsi 'fiand 7',

each of the spray devices 36 consists oiv a tube 38 having at its lower end a sleeve 39 adapted tofit' snugly over a tubular outlet port 40 onxthe' manifold arm 30. Each sleeve 39 has L-shaped slots 4| disposed to receive projections. 3% on each port 49; to establish; a bayonet; type: of. j ointby ,which the spray devicesrfiermay be; quickly-t and easily i'andsecurelyattached'to or removed fromithe manifold arm 39.

-- -Preferably, I provide theaupper end of each of the tubes 38 with a pair of projections) to enter l- ,-shaped slots 491110243845 to establish bayonet joint connections: by which thecaps dilmaywbe easily detached from ;the spray, devicesto' permit them-to be thoroughly-cleansed;- l V The manifold arm 31; extends substantially through themidd'l'e. zoneiofthe: chamber l2 and is substantially wider than the arm fill'but is of lessvthickness; The arm 31 is formed" with a 'pluralityof orifices disposed to directjetsoilwash water upwardly against objectsin that-basket l5. 'Iheorifices'eomprisea series;of centrally disposedslots-dfilsee Figs. 2 and a6) and: aseries of marginallydisposedvslots: 4-1 (see Fig-s2: and 5 The manifold 3|- -is-of great-advantage as-it takes the place of a series of tubes,:gener.allythreeeor four in number. Suchtubes: are relatively'difflculttto remove and'olean;

/ At and--49 I'have shown caps closing the ends of-the armsr30 and of the manifoldl 'lhe caps 48 and 49 are substantially identical andvforthat lreasonconlyethe cap 48-issshown in'detail; (see fig -4):. The ends-- of the-manifold arms are formed :witktransverse grooves 59- and the :caps.

,whi cnare ropen at. onepside; have ribs lso that they may be slid transversely into and out-rota position anchored on. the ends of themanifold ar -w I I Lhave not shown-operatinggcontrols and other details ofythe :dmhwa'shing machine ;l 2 as these may bei conventional.- .rinse water :conduit having :a. pair ofleaders '53 extending adjacent the side 11 of the chamberJZ.

I have shown at '52 the The conduit 52 has an armrfitl extendingitrans- *versely of-the'chamber 1'2 belew.-theimanifold 29 311d't7hQ-9Ifllf54dl10hld63 a pair of; leaders 55 extendingsubstantially the .lengtheof the chamber l2: and: disposed on opposite sides ofsthe -maniwhich dishes, glasses, and the likelare carriedrby a conveyor 59 trained. over sprockets wane; 6! and supported by tracks Band 63*. s

said unit comprising Va.manifold including azpair of spaced, parallel hollow arms interconnected At 64, I have shown the riser as indicative of the wash water delivery system. The riser 64 has an elongated mouth 65 disposed below the track 63 and adjacent the side wall of the chamber 58. The mouth 65 has grooves 66 extending along its sides to receive inwardly extending ribs 61 on the manifold element 68 to establish a slida ble interlock between the mouth 65 and the manifoldri'element 68 so; thatfthfe manifold element 'GS -may' be slid endwise from-"or into the machine out of or into a position in which it is locked to and supported by the mouth 65 of the riser 64. The manifold element 68 has a series of tubularports 69 (see Fig. 9) offset to support the spray devices 36 between the conveyor 59 and the adjacent -side f the chamber 58.

inventionvmakes possible a simple and inexpensive construction by which manifolds and spray; devices may be quickly and easily disconnected from the wash ,water delivery systems of dishwashing: machines touper mitsthem to; be tl-iorougl-lly cleansedlv, v g g What-I- therefore claim vand. desire to secure by-Letters- Patent is: v

1 A unit for dishwashing or 1 like, machines,

at one end, a detachable closure for the .other'end of eachyarm, adownwardly opening inlet port in communication with one of-said arms one of said arms. having a. plurality: of upwardly ppening spray ports spacedatherealong, asplurality of spray devic.eshavine-vertically alinedlsprayrnrts,

.andmeans. detachably connecting I said; spray detv-ices to the upper surface .oisaid eother arm: with the ports of eachspray device being disposed to.- wardssaid ptortediarme s r a 2. A unit fordishwashi-n or like machines; said unit; comprisinga.'re1ative1y long; andnarrow manifold including. a; compartment having. an

. inlet port and a cover, said compartment and said .cover including complemental .interen ageable portions-z enabling said a cover to be removed from or attached to said compartment in an endwise direction; a pluralityof, spray devices having vertically alinedv-sprayrports ,and means detach ably connecting said spray devices to; said: cover with-their ports disposedrtowards one .ofiitslsides.

JEFFERSON Jonnss REEEnENoEsoirenfl Theifollowing' e rences-1 are ;-of;=record:;in;the file Mathis patent:

STATES P-AI'ENTS Q g j Dat Number Name. g V

7799;983' Greer. -,,,M .1Sept., 1 ,1 8013;050 l-lauswir-thgsyfl, .Dece 19,1.1905

1,045,079 Prunier et a1. ,1 Nov. 19, 1912 1,131,638 Larson l 114 ,l, .Mar. 9, 71911.5 1,143,851 Benson -c V jJuII1e 15,1915 1,507;909 Davis Sept. 9; 1924 1,581,528 Anderson Apr, 20, 1926 1,'598;634' Wolf SeptJT, 1926 1,831,223 Anstiss' -1 Nov; 10, 1931 1,903,852 Rollins Apt-18, 1933 1,978,721 Perkins -Oct-. 30, 1934 2,031,816. Blakesleev Feb. 25, 1936 2,187,891; Poluzzi "1.7..- ..Jan. .23, 19.40 2,239,110 Mahoney, AE1-*. 2251941 

